VACUUM LINE FROM ECM ? ?


Information and questions on GL1500 Goldwings (1988-2000)
Post Reply
rider1939
Posts: 16
Joined: Wed Jun 09, 2021 4:20 pm
Location: MARION,MA,
Motorcycle: 1995 GL1500SE
1979 GL1000 - NAKED
1994 HONDA VFR
1979 MOTO GUZZI CONVERT
1974-77&78 DUCATI

VACUUM LINE FROM ECM ? ?

Post by rider1939 »



Bought a 1995 GL. It came with the carb removed and some of the vac hoses disconnected. I'm having a problem with the ECM hose and where it goes. Any schematic I've seen shows it going to the carb, but it isn't clear where it goes on the carb nor do I find a barb for it.

I've got the hose from the ECM to a T, from one branch is a plugged short hose, but nothing from the other branch/barb. I assume another hose plugs into the unused barb. Where does it go from the T ?

Any help would be appreciated.

Thanks - - - - Josh


User avatar
bellboy40
Posts: 939
Joined: Fri Nov 27, 2009 1:13 pm
Location: Brewton, AL
Motorcycle: 2000 GL1500SE Candy Spectra Red

Re: VACUUM LINE FROM ECM ? ?

Post by bellboy40 »

The vacuum line from the ECM goes to a tee and both sides of the tee go to the manifold. Here is a picture someone made showing how it is connected under the rubber mat. You should get a new 90° hose from that carb to the tee. That vacuum line is notorious for getting a hole at the bend and causing a vacuum leak and poor running. Here is a picture that should help you get it connected properly.

carb hoses under mat
carb hoses under mat


new carb hoses under mat
new carb hoses under mat

Last edited by bellboy40 on Sat Jan 08, 2022 4:09 pm, edited 1 time in total.
User avatar
bellboy40
Posts: 939
Joined: Fri Nov 27, 2009 1:13 pm
Location: Brewton, AL
Motorcycle: 2000 GL1500SE Candy Spectra Red

Re: VACUUM LINE FROM ECM ? ?

Post by bellboy40 »

I misspoke about the vacuum lines going to the carb. It goes to the manifold on each side. The manifold is under the rubber mat. The mat will have to be pulled up to get to where those hoses connect.
rider1939
Posts: 16
Joined: Wed Jun 09, 2021 4:20 pm
Location: MARION,MA,
Motorcycle: 1995 GL1500SE
1979 GL1000 - NAKED
1994 HONDA VFR
1979 MOTO GUZZI CONVERT
1974-77&78 DUCATI

Re: VACUUM LINE FROM ECM ? ?

Post by rider1939 »

Thanks bellboy40, Perfect ! ! !


Post Reply